Mold for building-blocks.



PATBNTED MAY l2, 1908.

F. MGM. SAWYER.

MOLD FOR BUILDING BLOCKS.

APPLICATION FILED JULY 26 Snowdon 27%@ nk Mci/zafra] Jay fix FRANK MCMURRAY SAWYER, OF CHARLOTTE,

NORTH CAROLINA.

MOLD son BU1LD1NGBIiocKs- Specification of Letters Patent.

Patented May 12, 1908.

Application filed July 26, 1907. SeriaINo. 385,719.

To all 'whom it may concern:

Be it known that I, FRANK MCMURRAY SAWYER, a citizen of the United States, residing at Charlotte, in the county of Mecklenburg' and State of North Carolina, have l beams and at 10 to eac invented certain new and useful Improvements in Molds for Building-Blocks, of which the following is a specification. l

My invention relates to devices for molding building blocks, and has for its primary object to provide a plurality of core ieces adapted for use in simultaneously mol king a series of blocks, said core ieces being collapsible to permit their rea y removal from the mold.

A further object of my invention is to provide in connection with said core pieces spacing plates removable with said core pieces, said plates acting in conjunction with transverse se arating plates to form the sides of the bloc is, said separating plates when said core pieces and spacing p ates areremoved, being ermitted to move laterally to permit their `disengagement from the sides of the formed blocks.

My invention also embodies certain other novel features, as will be hereinafter more artioularly described and claimed, reference ein had to the accompanying drawing, in which A A Figure l is a vertical sectional view showing two longitudinal series of molds with the core pieces is osition therein, one of said molds being filled, and the other ready for ling. Fig. 2 is an inverted plan view of a i set of core pieces, spacing plates and their supports. Fig. Sis a vertical central longitudinal sectional view of one of the longitudinal series. Fig. 4 is a detail perspective View of one of the spacing plates. Fig. 5 is a y my improved apparatus.

Similar numerals of reference denote corres onding parts in the several views.

n the said drawing the reference numeral 1 denotes' the transverse base sills, upon which are located longitudinal base sills 2, one for each series of molds, and each having resting thereon a pallet 3.

At 4 are shown the outside'side walls of the mold having inner facing plates 5, and at 6 is shown an intermediate slde wall.

While I have shown in Fig; 1 two longitudinal series of molds, it will be understood that there may be any number of such series,

and that the character of the outside and inyield or collapse slightly when erspective view ot' one of the blocks formed.

vwhich can then be termediate side walls 4 and 5 is immaterial. Extending lon itudinally of each series of molds are two beams 7, the same being connected preferably by the links 8 near their ends, said links being ivoted. at 9 to said other, so as topermit a movement of saidv beams towards each other and yet limit their movement away from each other to properly space them apart. Fixed to the underside of said beams at intervals apart correspondingto the width of a block to be formed, are the spacing plates 11, the same having horizontal portions 12 to ermit their attachment to' said beams. Said pairs of plates are preferably spaced apart edgewise the beams 7, and may be somewhat smaller than the interior of the mold, as will be hereinafter explained. Also fixed at their ends to the beams 7 are the series of core plates 13, one for each block to be molded, an each formed preferably of spring steel so as to readily the beams 7 are brought towards each other. Said core pieces are of the exact width of the blocks to be molded, and are so spaced apart asto just leave room therebetween for the spacing plates 11 and for a transverse separating plate 14 between each core piece and its adjoining spacing plate. i

From the above description the operation of my improved device will be understood as follows: To prepare a longitudinal series of molds the outside side wall 4 and pallet 3 are first located in position and the beams 7 carrying the spacing plates 11 and core pieces 13 then lowered into position so that said beams-rest on the end plates (not shown) of the molds. slid into position sidewise etween thespacing plates 11 and core pieces 13, and upon then locating in position the side plate 6 and fastening it with respect to side plate 4 in :gip suitable manner, the molds are ready for ing, it beino' understood that the separating plates 14 will properly position the side plates 4 and 6. The parts thus assembled form through the separating plates 14 and core pieces 13 a series of irgpplendent hollow molds e( cement or other material in a semi-li uid condition. When the molds have been ii led and the cement has set sufficiently for the blocks to retain their shape, the joints of the links 8 are broken so as to bring the beams 7 somewhat towards each other, which corredistance between said The separatinplates 14 are then by pouring in theand it will be understood that any numberof y tion in said mold and for contracting the aspondingly collapses the resilient core pieces the interior of the formedblocks 15, as will be readily understood. By now liftingbeams 7 the core pieces 13 are withdrawn from the vplates 11 affording ample room for their initial disengagement from the sides of said e The removal of said plates 14 will leave the their core pieces 13 and spacing plates 11,

"material, and a common means for support- 13 so that they come awav from contact with formed blocks and at the same time the spacing plates 11 will be withdrawn, leaving an intervening space between their adjacent separating plates 14. Upon now removing one of the side walls, as 4, the separating plates 14 may be Withdra-wn laterally` from between said blocks, the lateral space between said plates left by the'removal of the spacing blocks in case there should be any adherence.

row of formed blocks 15 alone on the pallet 3, which can then be bodily lifted and removed. By placing a fresh pallet 3 in position on the sills 2 replacing and positioning the beams 7 the separating plates"14 and the side wall 4, as hereinbefore described, the mold section is ready for a fresh charge et plastic cement.

I have shown in Fig. 1 the side wall 6 separating longitudinally two series of molds,

same to withdraw it from the formed block. 3. In a mold for building bloc'ks, a core piece formed oi a single piece of resilient ing and maintaining said core piece in position in sa1d mold and for' contracting the saineto Awithdraw it from the formed block. 4. In'a mold for building blocks, a pair of supporting beams movabletowards and from 'each other in parallel relation, and a series j of core pieces each formed of a single piece of resilient material connected at its ends to said beams and adapted to be contracted and expanded by the movement of said beams towards and from each other.

5. In a mold for building blocks, a series of open sided core pieces, means for removably supporting the same within the mold, and a series of spacing plates intermediate l 'saideore pieces and supported by the ore piece supporting means and removable therewith.

6. In a Vmold tor buildingblocks, a series of core pieces, a series of spacing plates intermediatev said core pieces, land a common means for supporting said core pieces and spacing plates inposition within the mold and for contracting said core pieces and removing the same land said spacing plates from said mold.

7. In a mold for building blocks, a pair of supporting beams movable towards and from each other in parallel relation, a series of core pieces connected to said beams and adapted vto be contracted and expanded by the movement of said beams towards and from each other and a series of spacing plates intermediate said core pieces and also `carried by sa1d beams.

8. In a mold for building blocks, a series of o en sided core pieces, a series of spacing p ates intermediate said core pieces, and a series of separating plates adapted to be located between said s acing plates and said core piecesyto close the sides of the latter.'

r9. In a mold for building blocks, a series of open sided core pieces, a series of spacing plates'intermediate said core pieces, a series of separating plates adapted to be located between-said spacing plates and said core pieces to close the sides of the latter, and means for simultaneously removing said core lpieces and said spacing plates from said mold.

10. In a mold for building blocks7 a series of core pieces, a series of spaclng plates intermediate sa1d core pieces, a pair of removable beams carrying said core pieces and spacing plates and movable towards and vfrom each other to contract and expand said core pieces, and a series of separating plates adapted to be removably inserted f between said.. core pieces and spacing plates.v I y 1 1. In a mold for building blocks, the ceni- 'bination with a baseiand lremovable side walls, of a seiies ofrcore pieces,` a series of y i transverse spacing plates between salid'core pieces, a common means for supportin land removing said corepieces and spacing p ates, and a series of transverse separating plates adapted to be inserted laterally between said core pieces and spacin lates and to be se ag P P rately removed after the blocks are formed and the .c ore pieces and spacing plates have been removed.

In testimony whereof I ailiXmy-signature,

in presence o'f two witnesses. I y

FRANK MCMURRAY SAVVYER. Witnesses:

Trios. W. ALEXANDER, ,JOHN W. TATE; 

